Connecting new account to existing .pst file

1. Open Your Old .pst File

• In Outlook, go to:

File > Open & Export > Open Outlook Data File

• Browse to your old .pst file and open it.
• It will appear in the folder pane as a separate set of folders.

2. Set the Old .pst as Default for Delivery (if using POP)

If your new account is POP, you can set the .pst as the default:

• Go to:

• File > Account Settings > Account Settings
• Under the Email tab, select your new account.
• Click Change Folder at the bottom.
• Choose Inbox from your old .pst file.

3. Workaround for IMAP Accounts

• Keep the .pst file open in Outlook.
• Drag and drop folders (Sent Items, Inbox, etc.) from the IMAP .ost into the .pst file.
• You can store all your future emails in the .pst by manually moving them or setting up rules.

4. Set the .pst as Default for Calendar & Contacts

IMAP accounts don’t support calendar/contact syncing natively. To use your old .pst for those:

• Go to:

• File > Account Settings > Data Files

• Select your old .pst file and click Set as Default
• Restart Outlook

This will make your old .pst the default for calendar and contacts.